Phosphorylation at serine 214 correlates with tau seeding activity in an age-dependent manner in two mouse models for tauopathies and is required for tau transsynaptic propagation. - Martinez P; Jury-Garfe N; Patel H; You Y; Perkins A; Lee-Gosselin A; Vidal R; Lasagna-Reeves CA (Journal of Alzheimer's disease : JAD, 2025)